Male protagonist: Lin Yuanzhou, 28 years old, a drone R&D engineer, rational and calm, and strong in practical skills.
Female protagonist: Su Wantang, 26 years old, is an ancient building restorer with delicate sensibility and is good at calligraphy, painting and ancient crafts.
How to travel: When the two of them were restoring an ancient painting from the Tang Dynasty in the museum, they accidentally triggered the mechanism in the painting and were pulled into the "big beam" of the dynasty in the painting (overhead, similar to the style of the late Tang Dynasty + Five Dynasties and Ten Kingdoms).
Goldfinger:
Lin Yuanzhou retains modern knowledge and engineering thinking, and can build simple machinery, improve weapons, and design water conservancy.
Su Wantang can understand ancient architectural/mechanical drawings, knows ancient paints, textiles, and medicine, and looks exactly like the late eldest princess.
Core contradiction:
After traveling through time, the two were separated. Su Wantang was mistaken for the eldest princess and sent to the palace; Lin Yuanzhou lived on the border and became involved in warlord disputes. The two survived in troubled times, secretly looking for each other, and finally joined forces to change history, establish a new dynasty, and chose to stay.
